Burroughs MCP
（重定向自Master Control Program）
The MCP (Master Control Program) is the proprietary operating system of the Burroughs small, medium and large systems, including the Unisys Clearpath/MCP systems.
Originally written in 1961 in ESPOL (Executive Systems Programming Language), which itself was an extension of Burroughs Extended ALGOL, in the 1970s it was converted to NEWP, a better structured, more robust, and more secure form of ESPOL.